Inverter AIR PLASMA CUTTING machine CUT40 1..Warranty 1 year. 2.. CE certification 3.PWM modulation technique Inverter AIR PLASMA CUTTING machine CUT40Function & Feature*High cutting speed, the cutting speed can be several times of torch cuttingm low operation cost*PWM modulation technique, high inverter frequency,portable, energy saving*Narrow cutting gap, smooth cutting surface, small ...